Want · Office
Series B fintech needs 8,000 to 12,000 SF
Posted by the tenant · Fintech
- Where
- Midtown South, Flatiron +1
- Size
- 8,000 to 12,000 SF
- Budget
- to $85/SF
- Move in
- Jan 2027
Near subwayHigh ceilings
Owners: got a fit?I have a fit
Commercial condominium · Union Square, Manhattan
100 Fifth Avenue
100 Fifth Avenue is a 19-floor commercial condominium in Union Square, Manhattan, built in 1906, with about 224,000 square feet of office space according to city records.
- Office space
- 224K SF
- Floors
- 19
- Year built
- 1906
- Listed on Leasemark
- 0
No space at 100 Fifth Avenue is listed on Leasemark yet. Own or broker space here? List it free and it is matched against every active requirement the day it goes up, or import a spreadsheet of up to 50 spaces at once.
NYC tax lot records
Building facts
- Building type
- Commercial condominium (city class RC)
- Total floor area
- 250,671 SF
- Commercial floor area
- 250,671 SF
- Office
- 224,260 SF
- Retail
- 16,926 SF
- Height
- 19 floors
- Year built
- 1906
- Last major alteration
- 1979
- Lot area
- 16,085 SF
- Zoning district
- C6-4M
- Built FAR
- 15.58
- Max commercial FAR
- 10
- Historic district
- Ladies' Mile Historic District
- Tax lot (BBL)
- 1008177502
- ZIP code
- 10011
Source: NYC Department of City Planning, PLUTO 26v2, pulled 2026-09-26. Floor areas are the city's estimates for the whole building, not available space. Walking times are straight-line estimates.
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Tenants and buyers with active requirements here. List a space in 100 Fifth Avenue and we match you automatically.
Questions about 100 Fifth Avenue
How big is 100 Fifth Avenue?
100 Fifth Avenue has about 251,000 square feet of floor area in total, including 224,000 square feet of office and 17,000 square feet of retail, according to NYC PLUTO 26v2. These are the city's estimates for the whole building, not space that is available.
When was 100 Fifth Avenue built?
City records list 1906 as the year built, with a major alteration recorded in 1979. The building is 19 floors tall.
What is the zoning at 100 Fifth Avenue?
The lot is in the C6-4M zoning district. PLUTO lists a built floor area ratio (FAR) of 15.58 and a maximum commercial FAR of 10 for this lot. It is inside the Ladies' Mile Historic District, so exterior changes go through the Landmarks Preservation Commission.
Is there office space for lease at 100 Fifth Avenue?
No space at 100 Fifth Avenue is listed on Leasemark right now. Owners and brokers can list space here for free, and tenants can post a requirement to be matched when space opens up.
Union Square
Getting there
- 4 5 6 L N Q R W at 14 St-Union Sq